Transcript Topic Seven powerpoint notesx

Most mountains are
large areas that have
been uplifted due to
the movement or
heating of plates
Plates can converge,
diverge or slide past
each other. This
movement can create
great heat and pressure.
The pressure can cause
rocks to fold and fault,
creating mountains.
Sometimes the heat
can melt the rock and
cause it to rise to form
volcanoes.
Rocks can fold if they are
hot enough to be soft.
Sometimes the rocks in Earth’s crust are too brittle to
fold. When pressure is exerted on them, they break,
forming a fault. This can form slabs that move up and
over each other like shingles on a roof. The older rock
may end up on top of the younger rock. These are called
fault-block mountains.
Complex mountains are formed by a combination of
different processes such as plates converging and
subduction.
The Himalayan Mountains in India (Mount Everest) are the
youngest and highest mountains in the world. How do
you know if mountains are young or old?
Are the Rocky Mountains
young or old?
Are the Laurentian Mountains
in Quebec young or old?
Mount Rundle, near Banff, has been uplifted and then
tilted.
Castle Mountain, between Banff and Jasper, has uplifted
rock that is nearly horizontal.
Rockies
Andes
Himalayas
Alps
Urals
Appalachians
Cascades
Earthquake Zones
Volcano Zones